<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
    div{
        width: 1000px;
        height: 700px;
        border: 1px solid red;
        /*默认是全部平铺的*/
        background-image: url("images/cat5.jpg");
    }
    .div1{
        background-repeat: repeat-x;
    }
    .div2{
        background-repeat: repeat-y;
    }
    .div3{
        background-repeat: no-repeat;
    }
    </style>
</head>
<body>
<div class="div1"></div>
<div class="div2"></div>
<div class="div3"></div>

</body>
</html>